class CookDao:
    
    def cook(self,waiter,manu):
        if manu.status==1:
            print("收到{0}点菜清单。".format(waiter.name))
            print("准备：{0}食材。".format(manu.name))            
            print("做菜：{0}完成。".format(manu.name))
            manu.status = 2
        